An electron of mass 9.11 x 10-31 kg has an initial speed of 3.40 x 105 m/s. it travels in a straight line, and its speed increases to 6.60 x 105 m/s in a distance of 5.80 cm. assume its acceleration is constant.
(a) determine the magnitude of the force exerted on the electron.(n)
(b) compare this force (f) with the weight of the electron (fg), which we ignored.
f/fg= ?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves

Ways that industry and agriculture use physical properties to separate substances